HSM CONTROL PROGRAM AND METHOD

• US 20080154988A1
• Filed: 12/05/2007
• Published: 06/26/2008
• Est. Priority Date: 06/10/2005
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Shiozawa, Kensuke, Shinkai, Yoshitake
• Application Number:
  US11/950,828
• Publication Number:
  US 20080154988A1
• Time in Patent Office: Days
• US Class Current: 707/204
• CPC Class Codes: G06F 12/0806 Multiuser, multiprocessor or multiprocessing cache systems
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0685 Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays

Abstract

An HSM control program allows a computer to execute: a metadata management step that manages primary storage location information which is location information of file data of the file on the primary storage unit, secondary storage location information which is location information of the file data on the secondary storage unit, and a file status value indicating the status of the file, as well as performs control operation on a file; an HSM information management step that manages HSM information including a replication of the secondary storage location information and policy information; and a data migration step that migrates the file data between the primary and secondary storage units based on the file control performed by the metadata management step and HSM information managed by the HSM information management step.

Claims

1. An HSM control program allowing a computer to execute an HSM control method for managing a file system using primary and secondary storage units, the program allowing the computer to execute:

a metadata management step that manages, as metadata of a file, primary storage location information which is location information of file data of the file on the primary storage unit, secondary storage location information which is location information of the file data on the secondary storage unit, and a file status value indicating the status of the file, as well as performs control operation on a file;

an HSM information management step that manages HSM information including a replication of the secondary storage location information and policy information based on the file control performed by the metadata management step; and

a data migration step that migrates the file data between the primary and secondary storage units based on the file control performed by the metadata management step and HSM information managed by the HSM information management step.

2. The HSM control program according to claim 1, wherein

the data migration step stores the file data of a file and path information of the file in the secondary storage unit.

3. The HSM control program according to claim 1, wherein

the file system is a cluster file system, and

the metadata management step controls the cluster file system.

4. The HSM control program according to claim 1, wherein

the metadata management step controls archive processing that copies the file data from the primary storage unit to secondary storage unit, release processing that releases the file data on the primary storage unit, recall processing that copies the file data from the secondary storage unit to primary storage unit, and invalidation processing that invalidates the file data on the secondary storage unit.

5. The HSM control program according to claim 4, wherein

the metadata management step gives the file, as the file status value, any of the following statuses including:

an archive invalidate status where the latest file data exists only in the primary storage unit, an archiving status where the archive processing is being performed, an archived status where the latest file data exists both in the primary and secondary storage units, a releasing status where the release processing is being performed, a released status where the latest file data exists only in the secondary storage unit, an allocating status where the area in the primary storage unit used for the recall processing is being secured, and a recalling status where the recall processing is being performed.

6. The HSM control program according to claim 1, wherein

the HSM information management step selects an archive processing target file based on the HSM information.

7. The HSM control program according to claim 4, wherein

the metadata management step performs collection of tokens from all nodes in the archive processing and release processing.

8. The HSM control program according to claim 1, wherein

the HSM information management step stores a file of several generations in the secondary storage unit through the archive processing and invalidation processing to retain the secondary storage location information of the file so as to manage the file of several generations.

9. An HSM control apparatus that manages a file system using primary and secondary storage units, comprising:

a metadata management section that manages, as metadata of a file, primary storage location information which is location information of file data of the file on the primary storage unit, secondary storage location information which is location information of the file data on the secondary storage unit, and a file status value indicating the status of the file, as well as performs control operation on a file;

an HSM information management section that manages HSM information including a replication of the secondary storage location information and policy information based on the file control performed by the metadata management section; and

a data migration section that migrates the file data between the primary and secondary storage units based on the file control performed by the metadata management section and HSM information managed by the HSM information management section.

10. The HSM control apparatus according to claim 9, wherein

the data migration section stores the file data of a file and path information of the file in

the secondary storage unit.

11. The HSM control apparatus according to claim 9, wherein

the file system is a cluster file system, and

the metadata management section controls the cluster file system.

12. The HSM control apparatus according to claim 9, wherein

the metadata management section controls archive processing that copies the file data from the primary storage unit to secondary storage unit, release processing that releases the file data on the primary storage unit, recall processing that copies the file data from the secondary storage unit to primary storage unit, and invalidation processing that invalidates the file data on the secondary storage unit.

13. The HSM control apparatus according to claim 12, wherein

the metadata management section gives the file, as the file status value, any of the following statuses including:

an archive invalidate status where the latest file data exists only in the primary storage unit, an archiving status where the archive processing is being performed, an archived status where the latest file data exists both in the primary and secondary storage units, a releasing status where the release processing is being performed, a released status where the latest file data exists only in the secondary storage unit, an allocating status where the area in the primary storage unit used for the recall processing is being secured, and a recalling status where the recall processing is being performed.

14. The HSM control apparatus according to claim 9, wherein

the HSM information management section selects an archive processing target file based on the HSM information.

15. The HSM control apparatus according to claim 12, wherein

the metadata management section performs collection of tokens from all nodes in the archive processing and release processing.

16. The HSM control apparatus according to claim 9, wherein

the HSM information management section stores a file of several generations in the secondary storage unit through the archive processing and invalidation processing to retain the secondary storage location information of the file so as to manage the file of several generations.

17. An HSM control method that manages a file system using primary and secondary storage units, comprising:

a metadata management step that manages, as metadata of a file, primary storage location information which is location information of file data of the file on the primary storage unit, secondary storage location information which is location information of the file data on the secondary storage unit, and a file status value indicating the status of the file, as well as performs control operation on a file;

an HSM information management step that manages HSM information including a replication of the secondary storage location information and policy information based on the file control performed by the metadata management step; and

a data migration step that migrates the file data between the primary and secondary storage units based on the file control performed by the metadata management step and HSM information managed by the HSM information management step.

18. The HSM control method according to claim 17, wherein the metadata management step controls archive processing that copies the file data from the primary storage unit to secondary storage unit, release processing that releases the file data on the primary storage unit, recall processing that copies the file data from the secondary storage unit to primary storage unit, and invalidation processing that invalidates the file data on the secondary storage unit.

19. The HSM control method according to claim 17, wherein

the metadata management step gives the file, as the file status value, any of the following statuses including:

an archive invalidate status where the latest file data exists only in the primary storage unit, an archiving status where the archive processing is being performed, an archived status where the latest file data exists both in the primary and secondary storage units, a releasing status where the release processing is being performed, a released status where the latest file data exists only in the secondary storage unit, an allocating status where the area in the primary storage unit used for the recall processing is being secured, and a recalling status where the recall processing is being performed.

20. The HSM control method according to claim 17, wherein

the HSM information management step stores a file of several generations in the secondary storage unit through the archive processing and invalidation processing to retain the secondary storage location information of the file so as to manage the file of several generations.